<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>线路覆盖凹面可视化</title>
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
    <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
    <script src="https://unpkg.com/@turf/turf@6/turf.min.js"></script>
    <style>
        body {
            margin: 0;
            padding: 0;
            font-family: Arial, sans-serif;
        }
        #map {
            height: 100vh;
            width: 100%;
        }
        .control-panel {
            position: absolute;
            top: 10px;
            right: 10px;
            background: white;
            padding: 15px;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
            z-index: 1000;
            min-width: 250px;
        }
        .control-panel h3 {
            margin: 0 0 10px 0;
            font-size: 14px;
        }
        .control-panel button {
            width: 100%;
            padding: 8px;
            margin: 5px 0;
            background: #007bff;
            color: white;
            border: none;
            border-radius: 3px;
            cursor: pointer;
        }
        .control-panel button:hover {
            background: #0056b3;
        }
        .slider-container {
            margin: 10px 0;
        }
        .slider-container label {
            display: block;
            margin-bottom: 5px;
            font-size: 12px;
        }
        .info-panel {
            position: absolute;
            bottom: 10px;
            left: 10px;
            background: white;
            padding: 10px;
            border-radius: 5px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
            z-index: 1000;
            font-size: 12px;
            max-width: 300px;
        }
    </style>
</head>
<body>
    <div id="map"></div>
    
    <div class="control-panel">
        <h3>凹面生成控制</h3>
        
        <div class="slider-container">
            <label>凹面紧密度 (maxEdge): 
                <span id="concaveValue">0.005</span>
            </label>
            <input type="range" id="concaveRange" min="1" max="50" value="5">
            <small>值越小凹面越紧密</small>
        </div>

        <div class="slider-container">
            <label>平滑度 (buffer): 
                <span id="bufferValue">0.002</span>
            </label>
            <input type="range" id="bufferRange" min="1" max="20" value="2">
            <small>值越大边界越平滑</small>
        </div>

        <button onclick="generateConcaveHull()">生成凹面</button>
        <button onclick="toggleLayer('lines')">切换线路显示</button>
        <button onclick="toggleLayer('points')">切换点显示</button>
        <button onclick="toggleLayer('convex')">切换凸包显示</button>
        <button onclick="resetView()">重置视图</button>
    </div>
    
    <div class="info-panel" id="infoPanel">
        点击"生成凹面"开始
    </div>

    <script>
        // 这里放入您完整的lineGeojson数据
        const lineGeojson = {
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                            121.08463916055003,
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                    ]
                ],
                "feederId": "",
                "feederName": "",
                "chargedState": "",
                "switchStatus": "0",
                "distribution": "0",
                "maintCrew": "ff8080814a616f0f014a709a0b0900ab",
                "maintCrewName": "配电运检班",
                "maintOrg": "ff8080814a616f0f014a70054fa2009e",
                "maintOrgName": "国网昆山市供电公司",
                "cityOrg": "ff8080814a616f0f014a6f9ba5840044",
                "cityOrgName": "国网苏州供电公司",
                "provinceId": "ff80808149f52e24014a039871840007",
                "crossfeederid": "",
                "crossfeederprovince": "",
                "isprovincecontainer": "",
                "direction": "",
                "kxDistribution": 0,
                "startDistribution": 1,
                "startStationType": "zf01",
                "startCity": "ff8080814a616f0f014a6f9ba5840044",
                "anchor": "bottom"
            }
        }
    ]
}

        // 地图和图层变量
        let map;
        let layers = {
            lines: L.layerGroup(),
            points: L.layerGroup(),
            concave: L.layerGroup(),
            convex: L.layerGroup()
        };

        // 初始化地图
        function initMap() {
            // 计算数据的边界
            const allCoords = getAllCoordinates();
            const bounds = getBounds(allCoords);

            map = L.map('map').fitBounds(bounds);

            // 添加地图图层
            // L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
            //     attribution: '© OpenStreetMap contributors'
            // }).addTo(map);

            // 添加所有图层组到地图
            Object.values(layers).forEach(layer => map.addLayer(layer));

            // 绘制原始线路
            drawOriginalLines();
            
            // 初始化滑块事件
            initSliders();
        }

        // 获取所有坐标
        function getAllCoordinates() {
            const allCoords = [];
            lineGeojson.features.forEach(feature => {
                if (feature.geometry.type === 'MultiLineString') {
                    feature.geometry.coordinates.forEach(lineString => {
                        lineString.forEach(coord => {
                            allCoords.push([coord[1], coord[0]]); // [lat, lng]
                        });
                    });
                }
            });
            return allCoords;
        }

        // 计算边界
        function getBounds(coords) {
            const lats = coords.map(coord => coord[0]);
            const lngs = coords.map(coord => coord[1]);
            return [
                [Math.min(...lats), Math.min(...lngs)],
                [Math.max(...lats), Math.max(...lngs)]
            ];
        }

        // 初始化滑块
        function initSliders() {
            document.getElementById('concaveRange').addEventListener('input', function(e) {
                const value = (e.target.value / 1000).toFixed(3);
                document.getElementById('concaveValue').textContent = value;
            });

            document.getElementById('bufferRange').addEventListener('input', function(e) {
                const value = (e.target.value / 1000).toFixed(3);
                document.getElementById('bufferValue').textContent = value;
            });
        }

        // 绘制原始线路
        function drawOriginalLines() {
            layers.lines.clearLayers();
            
            const colors = ['blue', 'green', 'red', 'purple', 'orange'];
            let colorIndex = 0;
            
            lineGeojson.features.forEach(feature => {
                const lineColor = colors[colorIndex % colors.length];
                colorIndex++;
                
                if (feature.geometry.type === 'MultiLineString') {
                    feature.geometry.coordinates.forEach(lineString => {
                        const latLngs = lineString.map(coord => [coord[1], coord[0]]);
                        L.polyline(latLngs, {
                            color: lineColor,
                            weight: 2,
                            opacity: 0.8
                        }).addTo(layers.lines).bindPopup(`
                            <strong>${feature.properties.devName}</strong><br>
                            ID: ${feature.properties.devId}
                        `);
                    });
                }
            });
        }

        // 生成凹面
        function generateConcaveHull() {
            const maxEdge = parseFloat(document.getElementById('concaveValue').textContent);
            const bufferDistance = parseFloat(document.getElementById('bufferValue').textContent);
            
            // 清除之前的凹面和凸面
            layers.concave.clearLayers();
            layers.convex.clearLayers();
            layers.points.clearLayers();

            // 提取所有点
            const allPoints = [];
            lineGeojson.features.forEach(feature => {
                if (feature.geometry.type === 'MultiLineString') {
                    feature.geometry.coordinates.forEach(lineString => {
                        lineString.forEach(coord => {
                            allPoints.push(coord);
                        });
                    });
                }
            });

            // 创建Turf点集合
            const pointsFeatureCollection = turf.featureCollection(
                allPoints.map(coord => turf.point(coord))
            );

            // 生成凸包作为对比
            const convexHull = turf.convex(pointsFeatureCollection);
            
            // 生成凹包 - 使用更小的maxEdge值来获得真正的凹面
            let concaveHull;
            try {
                concaveHull = turf.concave(pointsFeatureCollection, {
                    maxEdge: maxEdge,
                    units: 'kilometers'
                });
                
                // 如果凹包生成失败或与凸包相同，尝试更小的值
                if (!concaveHull || turf.area(concaveHull) >= turf.area(convexHull) * 0.95) {
                    console.log('凹面与凸面相似，尝试更小的maxEdge值');
                    concaveHull = turf.concave(pointsFeatureCollection, {
                        maxEdge: maxEdge * 0.5,
                        units: 'kilometers'
                    });
                }
            } catch (error) {
                console.warn('凹包生成失败:', error);
                // 尝试替代方法：使用凸包然后进行凹形处理
                concaveHull = processConvexToConcave(convexHull, pointsFeatureCollection);
            }

            // 平滑处理
            let finalHull;
            // if (concaveHull) {
            //     const bufferedHull = turf.buffer(concaveHull, bufferDistance, { units: 'kilometers' });
            //     finalHull = turf.simplify(bufferedHull, { 
            //         tolerance: 0.0005, 
            //         highQuality: true 
            //     });
            // } else {
                finalHull = convexHull;
            // }
// 
            // 计算面积
            const convexArea = turf.area(convexHull) / 1000000;
            const concaveArea = finalHull ? turf.area(finalHull) / 1000000 : convexArea;
            const areaReduction = ((convexArea - concaveArea) / convexArea * 100).toFixed(1);

            // 在地图上绘制凸包
            L.geoJSON(convexHull, {
                style: {
                    color: 'orange',
                    weight: 2,
                    fillColor: 'orange',
                    fillOpacity: 0.2
                }
            }).addTo(layers.convex).bindPopup(`
                <strong>凸包</strong><br>
                面积: ${convexArea.toFixed(2)} km²
            `);

            // 在地图上绘制凹包
            if (finalHull) {
                L.geoJSON(finalHull, {
                    style: {
                        color: 'red',
                        weight: 3,
                        fillColor: 'red',
                        fillOpacity: 0.4
                    }
                }).addTo(layers.concave).bindPopup(`
                    <strong>优化凹面</strong><br>
                    面积: ${concaveArea.toFixed(2)} km²<br>
                    比凸包减少: ${areaReduction}%
                `);
            }

            // 显示数据点
            L.geoJSON(pointsFeatureCollection, {
                pointToLayer: function(feature, latlng) {
                    return L.circleMarker(latlng, {
                        radius: 1.5,
                        fillColor: 'purple',
                        color: 'purple',
                        weight: 1,
                        opacity: 0.3,
                        fillOpacity: 0.3
                    });
                }
            }).addTo(layers.points);

            // 更新信息面板
            document.getElementById('infoPanel').innerHTML = `
                <strong>凹面分析结果:</strong><br>
                • 凹面面积: ${concaveArea.toFixed(2)} km²<br>
                • 凸面面积: ${convexArea.toFixed(2)} km²<br>
                • 面积减少: ${areaReduction}%<br>
                • 数据点数: ${allPoints.length}<br>
                • 参数: maxEdge=${maxEdge}
            `;
        }

        // 替代方法：将凸包处理成凹面
        function processConvexToConcave(convexHull, points) {
            try {
                // 对凸包进行负缓冲区操作来创建凹面效果
                const concave = turf.buffer(convexHull, -0.003, { units: 'kilometers' });
                return turf.simplify(concave, { tolerance: 0.001, highQuality: true });
            } catch (error) {
                console.warn('凹面处理失败:', error);
                return convexHull;
            }
        }

        // 图层控制函数
        function toggleLayer(layerName) {
            if (map.hasLayer(layers[layerName])) {
                map.removeLayer(layers[layerName]);
            } else {
                map.addLayer(layers[layerName]);
            }
        }

        function resetView() {
            layers.concave.clearLayers();
            layers.convex.clearLayers();
            layers.points.clearLayers();
            document.getElementById('infoPanel').innerHTML = '点击"生成凹面"开始';
        }

        // 页面加载完成后初始化
        document.addEventListener('DOMContentLoaded', function() {
            initMap();
        });
    </script>
</body>
</html>